diff options
| author | Reid Spencer <rspencer@reidspencer.com> | 2007-03-02 02:59:25 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2007-03-02 02:59:25 +0000 |
| commit | e1336b4086c523dd7f4c538b0bc582c45bc3f65f (patch) | |
| tree | 3ee2ed87c5fbf376048a8ba50de1a9573d40ca0f /llvm/lib/Analysis | |
| parent | 73f28259571721ca90be0d067b3303e6e4405e12 (diff) | |
| download | bcm5719-llvm-e1336b4086c523dd7f4c538b0bc582c45bc3f65f.tar.gz bcm5719-llvm-e1336b4086c523dd7f4c538b0bc582c45bc3f65f.zip | |
Fix an unequal bitwidth issue.
llvm-svn: 34831
Diffstat (limited to 'llvm/lib/Analysis')
| -rw-r--r-- | llvm/lib/Analysis/ScalarEvolution.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp index 438e42886bf..d2eca4adeb4 100644 --- a/llvm/lib/Analysis/ScalarEvolution.cpp +++ b/llvm/lib/Analysis/ScalarEvolution.cpp @@ -1341,9 +1341,12 @@ static APInt GetConstantFactor(SCEVHandle S) { return APInt(C->getBitWidth(), 1).shl(C->getBitWidth()-1); } - if (SCEVTruncateExpr *T = dyn_cast<SCEVTruncateExpr>(S)) - return GetConstantFactor(T->getOperand()) & - cast<IntegerType>(T->getType())->getMask(); + if (SCEVTruncateExpr *T = dyn_cast<SCEVTruncateExpr>(S)) { + APInt Mask(cast<IntegerType>(T->getType())->getMask()); + APInt GCF(GetConstantFactor(T->getOperand())); + Mask.zextOrTrunc(GCF.getBitWidth()); + return GCF & Mask; + } if (SCEVZeroExtendExpr *E = dyn_cast<SCEVZeroExtendExpr>(S)) return GetConstantFactor(E->getOperand()); |
